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ADDS-21XX-SW-PC データシート(PDF) 11 Page - Analog Devices |
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ADDS-21XX-SW-PC データシート(HTML) 11 Page - Analog Devices |
11 / 16 page ADDS-21xx-TOOLS REV. B –11– An alternate approach is required for the TQFP chip package. Because of the extremely low profile of the surface mount TQFP package, it is not practical to use a snap-on adaptor or probe. Thus, in order to use the EZ-ICE, it is necessary to provide a pair of header connectors on the target board that the ADDS-21xx EZ-ICE board can plug directly onto. Extra space around the adaptor and extra through-holes to the PQFP package are not required to let you use the same PCB in production. Dimensional requirements for placing the headers is also shown in Figure 2. ADSP-2181 There is no need for a surface mount adaptor for the ADSP- 2181 EZ-ICE. Instead, the ICE-Port Emulator Interface allows for a simple 14-pin connector interface between the target board and the EZ-ICE. DESIGNING AN EZ-ICE COMPATIBLE TARGET SYSTEM FOR THE ADSP-2181 AND THE ADSP-2171 ADSP-2181 Target System Requirements The ADSP-2181 has on-chip emulation support and a special set of pins that interface to the EZ-ICE called the ICE-Port. The ICE-Port allows in-circuit emulation without replacing the target system’s processor or overriding it with a probe, requiring only a simple 14-pin header connector to interface to the EZ- ICE (see Figure 3). Table IV lists the pins and functions used in the ADSP-2181’s ICE-Port emulation interface. Table IV. ADSP-2181 ICE-Port Emulation Interface Pin Description BR Bus Request BG Bus Grant RESET Reset GND Ground EBR Emulator Bus Request (emulator-only*) EBG Emulator Bus Grant (emulator-only*) ERESET Emulator Reset (emulator-only*) EMS Emulator Memory Space (emulator-only*) EINT Emulator Interrupt Request (emulator-only*) ECLK Emulator Clock (emulator-only*) ELIN Emulator Data In (emulator-only*) ELOUT Emulator Data Out (emulator-only*) EE Emulator Enable (emulator-only*) NOTE *These ADSP-2181 pins must be connected only to the ICE-Port connector in the target system. These pins have no function except during emulation. Keep all traces as short as possible; no longer than 3 inches. GUI Interface EZ-ICE software uses a Graphical User Interface (GUI) to increase development productivity by making your data easier to view and manipulate—without switching between screens— when debugging. In addition, you can obtain on-line help for the currently selected window. The GUI user interface design is the same one used with the ADSP-2100 Family Simulator software, making both tools easier to use. Clock Speed EZ-ICE runs at full speed. There is no degradation of processor performance other than BR, BG, and RESET, which are slightly delayed. A jumper is used to select either the target system clock or the EZ-ICE clock. The oscillator socket lets you use other oscillator devices to achieve different clock speeds. Memory The ADSP-2101, ADSP-2111, and ADSP-2171 EZ-ICE each have 8K × 24-bit overlay program memory and 16K × 16-bit overlay data memory. You can either run programs from target system memory, emulator overlay memory, or from a combination of both. The overlay memory option is jumper-selectable. Additional Equipment Required EZ-ICE requires a +5 V dc power supply capable of supplying 1 A of current. 3-Volt Emulation The 3-Volt Emulation Converter Board may be used with the ADSP-2101 EZ-ICE to enable emulation of ADSP-2103 (3 V) systems. SURFACE MOUNT ADAPTORS ADSP-2101/ADSP-2105/ADSP-2115 Several surface mount adaptors are available for emulation of the ADSP-2101. For example: for the 68-pin PLCC package of the ADSP-2101 and ADSP-2105, a PGA-to-PLCC adaptor is available from the vendors listed at the end of this data sheet. For the 80-pin PQFP package of the ADSP-2101, a 68-pin PGA to 80-pin PQFP adaptor is also available. The ADDS-2101-PGA/PQFP, a surface-mountable PGA-to- PQFP adaptor, provides a footprint that exactly matches the 80- pin package. This solution does not require extra space around the adaptor or an extra through hole to the PQFP package to let you use the same PCB in production. The PGA-to-PQFP adaptor is surface mounted in the usual manner, and the PGA connector of the ADSP-2101 EZ-ICE or ICE can be directly plugged in. ADSP-2111 The ADDS-2100-PGA/PQFP, a surface-mountable 101-pin PGA to 100-pin PQFP adaptor, matches the ADSP-2111 package footprints. This solution does not require extra space around the adaptor, and you can use the same PCB in production. The PGA-to-PQFP adaptor is surface mounted in the usual manner, and the PGA connector of the ADSP-2111 EZ-ICE can be directly plugged in. ADSP-2171 The ADSP-2171 EZ-ICE Emulator is designed for compatibil- ity with the surface mountable 128-pin PQFP package using an adaptor card which plugs onto the ADDS-21xx EZ-ICE board and then snaps onto the PQFP chip. This is illustrated in Figure 3. Extra space should be allowed around the PQFP chip to allow clearance for the adaptor. |
同様の部品番号 - ADDS-21XX-SW-PC |
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同様の説明 - ADDS-21XX-SW-PC |
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